In the course of looking up other things I came across a reference to a book described as follows: Conversations on Chemistry, in which the Elements of that Science are familiarly explained and illustrated by Experiments and Plates, From the last London Edition: The Second American Edition: Enlarged by an Appendix Consisting of a Description, with a Plate, and the Manner of Using of the New Hydro-Pneumatic Blow-Pipe, invented by Mr. Joseph Cloud of the Mint of the United States.
I'm continually impressed by what I learn of the skills and accomplishments of the gentlemen who manned the early Philadelphia Mint. From Director Rittenhouse on down, this was a very talented assemblage of individuals. Below is one reference to Cloud found on the Internet. Is anyone aware of other information on Joseph Cloud and his work at the Mint? -Editor
He was head of the melting and refining dept. of the US Mint, at Philadelphia from Jan 1798 until Jan 14 1836, when he resigned on account of poor eyesight. - Cloud Family Journal Vol. XIV, No. 4, p. 91 Aug. 12, 1845
Death Notice At his residence in Delaware county, on the 31st ult., Joseph Cloud, Esq., aged 75 years. The deceased was appointed an officer in the U.S. Mint at Philadelphia, by General Washington, and held the situation till removed by Gen. Jackson. He was highly esteemed by all who knew him, and regarded as a man of fine scientific attainments.
Joseph CLOUD was "Refiner and Melter" of the United States Mint (Philadelphia) from 1797-1836. He was elected to America's oldest scholarly organization the American Philosophical Society (founded by Benjamin Franklin), in 1806. He served as Secretary (1812) and Curator (1814-22) under Thomas Jefferson who was President of the Society from 1797 to 1814. By training, Joseph Cloud was a chemist. Following are excerpts from Chemistry in Philadelphia, by Edgar F. Smith (1919), pp. 86-90: "He had an honorable share in finally establishing the individuality of palladium . . . Cloud's papers are thoughtful and give evidence of wide knowledge in chemistry and skill in experiment. . .
Joseph Cloud 1770 - 1845 (http://mykindred.com/cloud/TX/getperson.php?personID=I52734)
Wayne Homren, Editor
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